Wrightwood, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 40 °F (low) to 64.7 °F (high). Annual precipitation averages 18.3 Inches. Wrightwood is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 29.2 °F | 49.4 °F | 3.65 in. |
| February | 28.8 °F | 50.1 °F | 5.0 in. |
| March | 31.9 °F | 55.7 °F | 2.38 in. |
| April | 34.9 °F | 60.5 °F | 1.14 in. |
| May | 41.1 °F | 69.1 °F | 0.37 in. |
| June | 48.8 °F | 79.0 °F | 0.14 in. |
| July | 55.9 °F | 83.8 °F | 0.32 in. |
| August | 55.4 °F | 82.5 °F | 0.3 in. |
| September | 50.0 °F | 76.1 °F | 0.43 in. |
| October | 41.5 °F | 65.4 °F | 0.56 in. |
| November | 34.1 °F | 56.4 °F | 0.89 in. |
| December | 28.6 °F | 48.8 °F | 3.14 in. |
| Annual | 40 °F | 64.7 °F | 18.32 in. |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |